QMM2400 F19 Chp 5 Review Problems Solution Page: 1 of 6 1) A municipal bus company has started operations in a new subdivision. Records were kept on the numbers of riders from this subdivision during the early-morning service. The table below shows the proportion of weekdays with the various number of riders from this subdivision during the early-morning service. a)Sketch the probability distribution b)Find and sketch the cumulative distribution c)What is the probability that on a randomly chosen weekday there will be at least four riders from the subdivision on the bus? 32.002.003.008.019.0)4(RidersPd)Two weekdays are chosen at random. What is the probability that on both of these days there will be fewer than three riders from the subdivision on this bus? 37.023.012.002.0)3(RidersPAssuming days are independent: 0.37(0.37) = 0.137 e)Find the mean and standard deviation of the number of riders from this subdivision on the bus on a weekday. 99.2)02.0(7...)23.0(2)12.0(1)02.0(0][RidersE41.1)02.0()99.27(...)12.0()99.21()02.0()99.20(][222RidersStddevNumber of riders01234567Proportion of days0.020.120.230.310.190.080.030.02Number of riders01234567Cumulative0.020.140.370.680.870.950.98100.20.40.60.811.20123456700.050.10.150.20.250.30.3501234567